text: ;AVS: Assignment validation suite ([https://www.ncbi.nlm.nih.gov/pubmed/14872126 AVS]) checks the chemical shifts list in BioMagResBank (BMRB) format for problems.
  ;PSVS: Protein Structure Validation Server at the NESG based on information retrieval statistics
  ;PROSESS: PROSESS (Protein Structure Evaluation Suite & Server) is a new web server that offers an assessment of protein structural models by NMR chemical shifts as well as NOEs, geometrical, and knowledge-based parameters.
  ;LACS:Linear analysis of chemical shifts is used for absolute referencing of chemical shift data.